Reading sustainability post annexations of Rumah Gadang architecture

Many of Rumah Gadang of Minangkabau in West Sumatra has strived through many years of extreme tropical climate. Through times this type of vernacular house has remarkably endure and stay, hence the increasing numbers of maintenance cost. One family generation to its next, as many other normal family houses may have experienced, the annexation phase (adding spaces) of living is inevitable. As Rumah Gadang design has been considered as one model of eco-tropical architecture fine example, its annexation could make the green compactness of its majectic design changed. This research analyzes major typical modifications and changes that could happen to Rumah Gadang's original design. Field research was conducted direct to its site's origin in West Sumatra. Its actual and recent plans (after annex) are documented to study the basics and its upgrading modification tendencies. This information then could become the base for further research on exploring the local wisdom, its traditional building values, material development and changes, and also its future endurance.